I've been cleaning up an old True Temper hatchet that was picked up at a sale, I like the design and wanted to get a sheath made up for it. I had some leather my Dad dropped off that was left over from some Boy Scout projects when I was a kid.
The leather was kind of on the thin side and soft so I melted some paraffin and soaked the leather in it to harden it up somewhat.
I used a drill bit to make holes for the rivets.
With the rivets installed I trimmed away the excess leather and cut out the strap.
I used the drill bit again for the same purpose on the strap to install the snap.
For less than a couple of dollars, some free leather and about an hours worth of time I made what should be a serviceable sheath.